High Strength Steel Bars - ASTM Certified Manufacturer |

Zhonghe Building Materials Co., Ltd.

Verified Custom manufacturer · 3 yrs ·

China

High strength steel bars for construction

Customizable Rock-bottom price

$480 1-49 ton Base price

$459 50-99 ton 4.4% off

$448 ≥100 ton 6.7% off

Price validity: subject to market conditions

Supplier's customization ability

Drawing-based customization
Sample-based customization
Full customization

Quantity

Minimum order quantity: 1 ton

Shipping total: To be negotiated

Subtotal of goods US$ 480.00

Start order request

Payment and delivery

Payment:: by contract — deposit, balance after your inspection
Lead time:: confirmed with the quotation
Packaging:: standard export packing
Samples:: available on request

Product details

Technical Specifications of High Strength Steel Bars for Construction

Property	Parameter	Description
Product Name	High Strength Steel Bars for Construction	Deformed and plain reinforcing steel bars for structural and civil engineering applications
Material Grade	HRB400 / HRB500 / HRB600 (GB); Grade 60 / Grade 75 (ASTM A615); B500B / B500C (EN 10080)	International equivalent grades covering Chinese, American, and European standards
Standard Compliance	GB/T 1499.2-2018; ASTM A615/A615M; EN 10080; JIS G3112; BS 4449	Compliant with major international construction and structural steel standards
Chemical Composition (C)	≤ 0.25%	Carbon content controlled to ensure weldability and ductility
Chemical Composition (Mn)	0.60% – 1.60%	Manganese enhances strength and hardenability
Chemical Composition (Si)	0.20% – 0.80%	Silicon improves strength and deoxidation
Chemical Composition (P / S)	P ≤ 0.045%; S ≤ 0.045%	Low phosphorus and sulfur for improved toughness and weldability
Tensile Strength	540 – 730 MPa (HRB400); 630 – 800 MPa (HRB500)	Per GB/T 1499.2-2018; Grade 60 min. 620 MPa per ASTM A615
Yield Strength	400 MPa min. (HRB400); 500 MPa min. (HRB500); 415 MPa min. (ASTM Grade 60)	Guaranteed minimum yield strength for structural load-bearing performance
Elongation	≥ 16% (HRB400); ≥ 15% (HRB500); ≥ 7% (ASTM A615 Grade 60)	Minimum elongation at fracture ensuring ductile behavior under seismic and dynamic loads
Diameter / Size Range	6 mm – 50 mm (diameter); Length: 6 m, 9 m, 12 m or custom	Available in standard and custom cut lengths; deformed rib profile per applicable standard
Surface Finish	Hot-rolled deformed (ribbed) or plain round surface	Deformed bars provide superior bond strength with concrete; plain bars for specific structural uses
Application	Reinforced concrete structures, bridges, tunnels, high-rise buildings, foundations, retaining walls	Widely used in civil, infrastructure, and seismic-resistant construction projects
Certification	ISO 9001:2015; CE Marking (EN 10080); Mill Test Certificate (MTC) per EN 10204 3.1	Third-party inspection available; certificates provided with each shipment
Packaging	Bundled in 2–5 MT bundles; wire-tied; seaworthy export packing available	Standard bundle weight customizable per buyer requirement; labeling per standard
MOQ	25 MT per grade/size	Mixed size orders accepted; FOB, CFR, CIF terms available

High Strength Steel Bars - ASTM Certified Manufacturer

High strength steel bars for construction serve as the structural backbone of modern infrastructure projects worldwide, from high-rise residential towers to heavy-load industrial facilities. Engineered to deliver exceptional load-bearing performance, these bars meet the most demanding structural requirements while offering reliable dimensional consistency across every production batch. Our ASTM-certified high strength steel bars for construction are manufactured under rigorous quality control protocols, ensuring compliance with ASTM A615, ASTM A706, and BS 4449 international standards. With a minimum yield strength of 420 MPa (Grade 60) and tensile strength reaching up to 620 MPa, these bars provide the structural integrity that engineers and contractors depend on. Whether you are sourcing material for reinforced concrete foundations, bridge decks, retaining walls, or seismic-resistant frames, our product line covers diameters ranging from 6 mm to 50 mm to match your precise project specifications. We supply construction firms, steel distributors, and government infrastructure projects across more than 40 countries with consistent, traceable, mill-direct steel solutions.

High strength steel bars for construction supplier

What is High Strength Steel Bars for Construction?

High strength steel bars for construction are hot-rolled or cold-drawn reinforcing bars specifically designed to enhance the tensile capacity of concrete structures. Produced from low-alloy or carbon steel billets, these bars feature deformed surface ribs that maximize mechanical bonding with surrounding concrete. They are graded by yield strength — commonly Grade 40 (280 MPa), Grade 60 (420 MPa), and Grade 75 (520 MPa) — and find critical application in structural columns, slabs, beams, and seismic-zone reinforcement systems.

High strength steel bars for construction manufacturer

High Strength Steel Bars for Construction Manufacturing Process

Production begins with the electric arc furnace (EAF) melting of carefully selected scrap steel and alloying elements such as vanadium and manganese to achieve target chemistry. The molten steel is continuously cast into billets, then reheated to approximately 1,150°C before passing through a multi-stand rolling mill that forms the deformed rib profile. Controlled cooling via the Tempcore or quench-and-self-temper (QST) process locks in a hardened martensite surface layer over a tough ferritic-pearlitic core, delivering the superior strength-to-ductility ratio demanded by seismic design codes.

High Strength Steel Bars for Construction Technical Specifications

Our high strength steel bars for construction are available in the following verified parameters: diameter range 6–50 mm; standard lengths of 6 m, 9 m, and 12 m (custom lengths available); yield strength 420–520 MPa; ultimate tensile strength 620–750 MPa; elongation at fracture ≥14%; carbon equivalent (CE) ≤0.55% per IIW formula; density 7.85 g/cm³ at 20°C. Surface deformation geometry complies with ASTM A615/A615M, ASTM A706/A706M, BS 4449:2005+A3:2016, and GB/T 1499.2-2018. Each bundle ships with a mill test certificate (MTC) traceable to heat number for full quality accountability.

Get a Competitive Quote for High Strength Steel Bars

Partner with a trusted ASTM-certified manufacturer and access mill-direct rates on high strength steel bars for construction. Our dedicated sales engineers are ready to review your project drawings, recommend the optimal grade, and deliver a detailed quotation within 24 hours — backed by flexible MOQ and bulk-order pricing tiers.

24/7 customer support available
Free samples for quality evaluation
Competitive pricing for bulk orders
Professional technical consultation

Contact us today to get your free quote within 24 hours!

High strength steel bars for construction wholesale

Ratings & Reviews

4.5

Based on 8 reviews

5 5

4 2

3 1

2 0

1 0

David M.

United States

2025-02-01

Initial documentation delay resolved — quality was fine

Ordered 40 tonnes of 32 mm Grade 60 bars for a Florida coastal foundation project requiring full ASTM A615 compliance documentation. The bars themselves tested well — yield strength 431 MPa, elongation 14.5% — but the MTC package initially arrived without the heat number cross-reference our inspector required. This caused a two-day hold on our pour schedule. After raising the issue, the supplier emailed the corrected documentation within four hours and followed up with a process improvement confirmation. Product quality was not in question. Documentation process has since been addressed and we are considering a follow-up order.

Ralf B.

Germany

2025-02-23

Competitive pricing for EN-equivalent Grade 500 bars

We sourced 50 tonnes of 10 mm to 25 mm bars with mechanical properties equivalent to EN 10080 B500B for column reinforcement in a Munich commercial development. The technical team provided a detailed cross-reference between ASTM A615 and our EN requirements, which simplified our engineer approval process. Delivery took 26 days — two days beyond the initial estimate due to port congestion, which was communicated in advance. Quality was solid: CE at 0.50%, elongation 15.1%. Would have been five stars with tighter logistics. Will order again.

Oliver H.

United Kingdom

2025-03-17

Good value on bulk Grade 60 order, minor packaging feedback

Ordered 75 tonnes of 16 mm and 20 mm ASTM A615 Grade 60 bars for retaining wall construction in Yorkshire. Mechanical properties were fully compliant — yield strength 425 MPa, UTS 638 MPa — and the mill test certificates were clear and well-organised. Pricing was noticeably competitive versus our usual UK steel stockholder, saving around 9% on this volume. One bundle arrived with slightly damaged wire binding, though the bars themselves were undamaged. Supplier arranged a credit promptly. Overall strong value for the specification required.

Know your supplier

Zhonghe Building Materials Co., Ltd.

3 yrs on Sinoali.com

Located in China

Company information More goods

FAQ

Q: What grades of rebar do you supply?

A:We mainly supply HRB400, HRB500, A615 Grade 60, B500B and other high-strength deformed steel bars.

Q: What diameters are available for your rebar?

Q: Can you provide mill test certificates (MTC) for rebar?

Q: Do you accept customized lengths for rebar?

Q: Can you supply deformed steel bars for concrete reinforcement?

Q: What packaging is used for steel rebar?

Product display

Zhonghe Building Materials Co., Ltd. is a professional industrial manufacturer and supplier focusing on high-quality building materials. We specialize in a full range of steel building materials, covering reinforcing steel bars, galvanized steel products, corrugated steel sheets, structural steel pipes and other related metal construction materials.

Equipped with advanced production lines and precision testing equipment, the company implements strict full-process quality control and holds authoritative industry qualification certificates. We maintain sufficient spot inventory, adopt standardized export packaging, and ensure stable delivery cycles to meet global customer demands.

Our products are widely applied in construction engineering, machinery manufacturing, shipbuilding, energy and infrastructure projects. Adhering to the principle of quality first and customer-oriented service, we are committed to providing reliable building material solutions and long-term stable cooperation for global clients.